"use strict";
function format(type, date) {
    var o = {
        'M+': date.getMonth() + 1,
        'd+': date.getDate(), //日
    };
    if (/(y+)/.test(type)) {
        type = type.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length));
    }
    for (var k in o) {
        if (new RegExp('(' + k + ')').test(type)) {
            type = type.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ('00' + o[k]).substr(('' + o[k]).length));
        }
    }
    return type;
}
var time1 = format('yyyy-MM-dd', new Date());
console.log(time1);
